Corner-clamp



(N0 Model!) CORNER CLAMP., No. 888,281. Patented Nov, 88, 1888.

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NITED STATES PATENT j OFFICE.

JOHN ANDERSON, OF TOLEDO, OHIO.

CORNER-CLAN P.

SPECIFICATION forming part of lLetters Patent No. 353,281, dated November 30, 1886.

Application filed January 2, 1886. Serial No. 187,506. (No model.)

struction and combination of devices that will be more fully set `forth hereinafter, and particularly pointed out in the claim.

In the drawings, Figure 1 is a perspective view of my invention. Fig. 2 is a sectional view of the same.

A represents the corner-clam p, which is rectangular in form, having the sides B and the front C. rlhe outer or rear ends of the sides are bent or shaped to form loops, the openings D of which are aligned with each other.

One bar, a, of the quilting or ring frame is passed through the openings D, and a similar bar, b, `is passed through the opening formed between the bar a and the front andthe sides of the clamp, the said bars d and b being thus held exactly at right angles to each other. A plate, E, is interposed between the bar band the front of the clamp, anda set-screw, F, passes through a threaded opening inthe front of the clamp and bears against the plate E.

By turning the screw F the barsa and b may be clamped together and to the cornerclamp, and thus the frame may be adjusted to any desired size, as will be readily understood.

A corner clamp thus constructed is ex,- tremely cheap and simple, and is very useful on quilting and rug frames, in admitting of easy adjustment of the said frame to any desired size, and in keeping the bars thereof at exactly right angles.

I am aware `of the patents to Warren, No.

182,705, and Marsh, No. 211,032, and do not claim anything showntherein. In the former patent double rings are employed to receive the bars Vof the frame, the said rings being an ranged at angles to each other and fitted one within the other. Double screws are employed, one for each ring, to bind against the bars of the frame. My device differs from this in the fact that the clamp is made all in one piece open in the center, so that lthe two bars of the frame bear against each other, and thus one screw can be used to malte the connection tight. In the construction shown in the Warren patent two screws must necessarily be employed, as the bars of the frame do not touch each other, as in the present case. FurtherA more, the double-ring connection cannot be The cornerclamp formed of a single piece of metal, and having the front Gand the arms B, forming a rectangle, the arms having the lthe front for clamping the bars of the quilting-frame together, substantially as described.

In testimony that I claim the foregoing as my own I have hereto affixed my signaturein presence of two witnesses.

JOHN ANDERSON. Witnesses:

JEROME B. WHIPPLE, FRED C. KRIETE. 

